S
M
T
W
T
F
S
30
79°
55°
31
78°
57°
1
79°
58°
2
81°
60°
3
81°
53°
4
75°
48°
5
77°
56°
6
79°
53°
7
76°
57°
8
77°
59°
9
80°
58°
10
80°
58°
11
79°
57°
12
78°
57°
13
79°
51°
14
75°
51°
15
72°
48°
16
71°
47°
17
70°
44°
18
72°
48°
19
72°
49°
20
70°
50°
21
70°
45°
22
72°
41°
23
67°
47°
24
64°
50°
25
63°
51°
26
72°
51°
27
69°
50°
28
70°
48°
29
72°
40°
30
72°
37°
1
61°
36°
2
58°
35°
3
56°
35°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Grove City
Grove City's September 2026 forecast shows daily high temperatures ranging from 56° to 81°, with overnight lows between 35° and 60°. The average high for September is 73° with an average low of 50°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Grove City. See also: October | November | December.
